35KV 1600A Gas Insulated Switchgear Mv Gis

Product Features

1. By using sulfur hexafluoride gas as a shielding and arc extinguishing medium, the dimension of the switchgear can be significantly lowered, resulting in an extra small and smaller sized style.

2. The conductive part of the main circuit, which is highly trustworthy and safe, is sealed in SF6 gas, maintaining the high-voltage live conductor confined and untouched by outside factors. This makes sure long-lasting safe procedure and high integrity of the devices.

3. There is no danger of electrical shock or fire.

4. The 35KV 1600A Gas Insulated Switchgear Mv Gis is created with an independent modular framework, with the air box made from high-precision aluminum plate and can be dismantled. The isolation button embraces a direct transmission with three placements. To decrease control relay and circuit complication, an added control module with virtually 100 PLC points is consisted of for grounding, isolation button, and remote operations. The system switch is modular, connecting opening and closing factors with plum bloom contacts. This eliminates the opportunity of non-operation in the original rotary seclusion switch and basing switch, resolves the concern of unpredictable and extreme call resistance in the initial rotary seclusion switch, and includes shielding and voltage equalization covers on each contact's outside to resolve partial discharge issues during switch breakpoints manufacturing.

5. The gas-insulated switchgear is convenient to use and organize. It can be made use of as an independent system and satisfy numerous primary circuitry needs via mix. Providing it to the website as devices can reduce on-site installation and enhance reliability.

Execution standards

IEC 62271-200: 2011 High-voltage switchgear and controlgear - Part 200: AC metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV

IEC 62271-102:2013 6.2 High-voltage switchgear and controlgear - Part 102: Alternating current disconnectors and earthing switches

IEC 62271-100: 2017.6.2 High-voltage switchgear and controlgear - Part 100: Alternating-current circuit-breakers

GB/T11022-1999 Common technical requirements for high-voltage switchgear and control equipment standards

GB3906-2006 3.6kV~40.5kV AC Metal Enclosed Switchgear and Control Equipment

GB311.1-1997 Insulation Coordination of High Voltage Transmission and Transformation Equipment

GB/T16927.1-1997 High voltage testing technology Part: General test requirements

GB/T16927.2-1997 High voltage testing techniques Part 2: Measurement systems

GB/T7354-2003 Partial discharge measurement

GB1984-1989 AC High Voltage Circuit Breakers

GB3309-1989 Mechanical tests of high-voltage switchgear at room temperature

GB4208-2008 Code for Degree of Protection Provided by Enclosures (IP)

GB12022-2006 Industrial sulfur hexafluoride

GB8905-1988 Guidelines for gas management and inspection in sulfur hexafluoride electrical equipment

GB11023-1989 Test method for sulfur hexafluoride gas sealing of high-voltage switchgear

GB/T13384-1992 General technical requirements for packaging of electromechanical products

GB4207-2003 Solid insulation materials - Determination of relative and resistance to electrical trace index under humid conditions

GB/T14598.3-2006 Electrical relays - Part 5: Insulation of electrical relays

GB/T17626.2-1998 Electromagnetic Compatibility Testing and Measurement Techniques - Electrostatic Discharge Reactance Interference Test

GB/T17626.4-2008 Electromagnetic Compatibility Testing and Measurement Techniques - Electrical Fast Transient Pulse Group Immunity Test

GB/T17626.5-2008 Electromagnetic Compatibility Testing and Measurement Techniques - Surge (Impulse) Immunity Test

GB/T17626.12-1998 Electromagnetic Compatibility Testing and Measurement Techniques - Oscillating Wave Immunity Test

Test Type

◆ Insulation test

◆ Temperature rise test

◆ Loop resistance measurement

◆ Short-time withstand current and peak withstand current tests.

◆ Verification of making and breaking capabilities

◆ Mechanical operation and mechanical characteristic testing tests

◆ Protection level detection

◆ Additional tests on auxiliary and control circuits

◆ Pressure tolerance test for inflatable compartments

◆ Sealing test

◆ Internal arc test

◆ Electromagnetic compatibility test

Basic Scheme

Operation Condition

Technical Parameter

Grounding and Separation

The 35KV 1600A Gas Insulated Switchgear Mv Gis is available in various current capacities, including 630A, 1250A, 1600A, 2000A, 2500A, 3150A, and more. The size of the unit can be tailored to meet specific needs. It features an aluminum zinc-coated outer shell and a gas box constructed from 304 stainless steel plates. Each unit is expandable and can be integrated independently as per the design layout. The cabinet is compartmentalized into separate areas for secondary control, busbar, circuit breaker, operating mechanism, and cable connections. With a cable connection height of up to 700mm, maintenance and installation are simplified. Additionally, a comprehensive grounding protection system is included. The switchgear includes isolated functional compartments like switch rooms, busbar rooms, cable rooms, and secondary circuit channels, each separated by a grounding metal partition and operating autonomously.

Secondary control room

The cabinet is positioned beneath the secondary control room and features panels for setting up components and supports for securing terminal blocks. In the secondary control room, different devices like wiring terminals, small busbar terminals, and extensive protection devices can be installed. These devices facilitate functions like remote control, telemetry, remote signaling, and local monitoring for the system. Circular openings on the side panels and terminals on the left and right sides simplify connecting the cabinet with small busbars.

Busbar Compartment

The topmost compartment houses the busbar chamber and the isolation system. The connection between the circuit cabinets and busbars on either side is reinforced through the merging of cabinets once the cabinet is positioned on the ground-based support.

Switch Room

The 35KV 1600A Gas Insulated Switchgear Mv Gis features a two-chamber design, with one chamber located above the other, in the central part of the cabinet. The upper chamber houses a three-position isolation switch, while the lower chamber is equipped with a vacuum circuit breaker. The components are arranged vertically, with the busbar, isolation switch, and circuit breaker positioned one above the other. While the single-chamber design is more cost-effective and simpler to manufacture, it has lower reliability due to the close proximity of the components. On the other hand, the multi-chamber design offers higher safety standards by minimizing interference between components and allowing for easy replacement. However, it is a more complex, challenging to manufacture, and expensive option.

Institutional Room

The spring-based mechanism is positioned in a horizontal plane, with the isolation and circuit breaker systems functioning independently. It is connected to the vacuum arc extinguishing chamber's insulation rod, streamlining the transmission process. The mechanism's performance is optimized to match the circuit breaker's opening and closing capabilities, leading to decreased energy consumption, improved mechanical reliability, and increased flexibility.

Cable Room

The cabinet is positioned on top of the cable room and includes its own pressure relief route. The height between the ground and the cable connection points may reach up to 700mm. Grounding interlocks are installed in the cable room to meet standards, enabling the setup of two cables and lightning arresters in every circuit. Additionally, the internal cone insertion technique links the incoming and outgoing cables along with the lightning arresters.